Very little has been written on the constitutional education of Queen Elizabeth II. The aim of this lecture is to understand the training for her role in a country in which the Constitution is not codified and where learning about power is done in a practical way. Studying the Queen’s traditional education, the way she put it into practice and how it was also put to the test during the 70 years of her reign allows us to understand better why her reign was an inescapable example for the education of future monarchs, even though such an education deserves, in turn, to evolve.